noregaard



Jan. 31, 1956 M. J. NOREGAARD DOOR LOCK 2 Sheets-Sheet 1 Filed Sept. 9,1952 TV Um I.

INVENTOR. Ma urice c7: Nore q'ac1 rd Jan. 31, 1956 M. J. NOREGAARD DOORLOCK 2 Sheets-Sheet 2 IN V EN TOR. 1"1' as t]: Nor-85a or d BY I Mau E@w Iv Filed Sept. 9, 1952 YN vw VV// /j United States Patent 9 DQOR LOCKMaurice J. Noregaard, Los Angeles, Calif. Application September 9, 1952,Serial-N0. 308,680 Claims. (6]. 70-211) This invention relates tomechanical door locks and more particularly pertains to door locks ofthe class having a spindle engageable by a locking pin for preventingthe rotation of the spindle.

It is a primary object of this invention to provide a mechanical doorlock operable by a key in the form of a fiat fibrous card.

Another object of this invention is the provision of a mechanical doorlock applicable particularly to the doors of apartment houses, hotelsand homes as well as to those of club rooms and club buildings. In thelatter case, the lock may be operated by means of'the membership cardsof the club.

It is. another object of this invention to provide a door lock whereinthe spindle .of-the doorlatch may be locked, thereby eliminating thenecessity of: providing a separate locking member.

Still another object of this invention is: theprovision of a mechanicaldoor lock which is simple. inconstruction and attachable to a varietyofdoor latch assemblies.

The manner in which the foregoingandother objects of, this invention areaccomplishedwill be apparent from the following specification and claimsconsidered together with the accompanying drawingwherein-v like;numerals of-reference indicate like parts, andwherein;

Fig. l is a sectionalview in side elevation, illustrating the presentlydescribed-door-lock inits lockedposition;

Fig. 2 is a view similar tQFig. 1, illustrating the lock in its unlockedposition;

Fig. 3- is, an enlarged view, ofthe presently desciibed loch mechanismin the position. of. Fig. l; and

Fig. 4 is an enlarged view of the. presentlydescribed lock mechanism inthe positiomofFigJZ.

As. is illustrated in thedravvings, the doorloclc; ofgthis: invention isapplicable -to agdoon- Mtg-which may afford; access to anapartment,hotel. room, or. dwelling, or to,

quarters; occupied by a club, the mem ers of which are prcndded withmembership: cards. The door is-operated: by means of a, latch. bolt. 12.com;ectedthrough latch. bolt? retracting means, 14: to. an interior.spindle.,-16 and an. ex? tenor-spindle 18; The latter are. attached inturn. to door knobs 2t and. 22: respectively. A pair of; escutcheon,plates 24, 26 may alsobe. included. This assembly-maybe of substantiallyconventional, construction; theflatch bolt retracting means being;ottheclasspermitting the-zbolt: to I be, operated independently by, theinteriorand exterior-,- Any oneof-amember. of suchretracting-means:currently on the. market thusis adaptable. to thepurposesv spindles.

of thepresent invention To. adapt a conventional door and. latchvboltassembly for. use. in this invention, one. of the spindle members,usually theexterior spind1e,18, ist-provided Wlth"a.tIaIflS- verserecessztlonits underside. Also, the.door 1s-.pr.o

vid ed. With. alongitudinal rece ss .30,. a transyerselborin g.32..communicating. with. recess. 31!, and -atransverse. opeming, an,also communicating, with. tecessi30... Qnposite.

. as. n 4 s. a o z n a lqtqfl htqu h esqutshwa;

Plate. 6-

Stationed Within recess 30 is-the lockingping lllzextendingsubstantially perpendicular to. spindle 18 and positioned forretractable penetration,of:recess. 28-, therein. The upper end of thelocking pin, is guided;by;means..of sleeve 42. Its lower end-penetratesand is guided by:an opening in a non-magnetic housing.44.contained inthetransverse opening 34.

Manual reciprocation of locking; pin, 40} may. be. achieved by means ofalocking pin. extensionflfi attached to the locking pin at about itsmidapoint and lyingl transverse boring 32. The outer endof thisextensionpenm trates an opening48 inescutcheon p1ate .24; andis..fittegl with a guide plate 50in sliding contact with the escutcheon:plate. A. head 52 is. provided on the outer. end of;the.exr tension sothat by suitable maniuplationof the same.the locking pin may bere-inserted'in recess.;28' in spindle1-8; after each unlockingoperation.

Means are provided, however, for normally urgingthe; locking pin in thedirection of Withdrawal from the recess. In the illustrated embodimentsuch means comprisethe spring 54 compressed between sleeve 42. andaprojection: extending outwardly from locking, pin 40.

Means also are provided for opposingthe withdrawing action of springStand for maintaining thelocking pin. within recess 28 when it isdesired to lock thespindle. against rotation. Such means comprise theabuttingpin or post 56. The latterpin is threadedinto orotherwisealfixed to slidable lockingmeans comprising a. locking plate on slidablymounted for longitudinalreciprocation, within housing 4-4. Thus plate60'may be-stationed 'inthe retracted position. of Fig. l;whereinisupportingpin 56, underlies and supportslockingpin 40' Withinrecess. 28 Alternatively, it may be moved to the advanced positiom ofFig. 2 Whereinpin Soho-longer underlies-andsupports: locking pin 40..The latter, urged both. by gravity; and by spriug54, thereupon iswithdrawn fromrecess-lll;

To urge lockingplate 60 normally in the direction of its retractedstation, resilient means are. provided in the. form of a spring 62mounted on the lower member of L housing 44 and contained withinthehousing extension 64. Spring 62- is stationed intthe path. of" movementof plate 69 and normally bears against the? same. Hence it resilientlyopposes theadvancingtmovementgof theloclo; ing plate and willreturn itto.itsretracted positiorrwherr the moving force is withdrawn.

Lock means are provided for locking-ythelecking plate in its retractedposition underlying locking pin 40 and hence locking spindle 18. In theillustrated form, the lock means comprises a plurality.of'cylindricalmagnets 66, as, ill-and 72-.stationed Withintransverse openingsinr:lockingplate oiland arranged, in a predetermined pattern; The lockingplate and the magnetsjwhich: itcarriesare sandwiched between a painofnonamagnetic perforatedplates 74, 7%. These serve as guides for;thereciprocativiemovement ot lockingplate-fit) and alsouas, stops: for.op=- posing the motion of-thesame, dependingnponxtheposi tionof themagnets.

Thus upper-plate. 74 has therethrougha plurality :of! perforations 76;'78, ilandrififopposite the .openings in plate on which housemagnetsfifi; 68; 7(l and=72respectively. Selectedones ofth'e-openings,for example, openings-76 and iii) have a diameter just sufficiently,large :tou accommodate the ends of the. corresponding;magnets However,others of the openings, for example, openings; '73 and 32 aresutiiciently, large to permit'a, restricted lateral movement of themagnet {when inserted; therein,

Similarly, the, lower plate. 75. carries; a correspondin g; pattern ofperforations. as, 86, seam-90,. Howey/er, in; this case perforations 84and 88.,oppo-site:rnagnetsfi and, 7t respectiyelyareenlargemwhereas;openingsflfi and 9tl opposite magnets 68 and T72;:'respec t ively,are restricted in; i me e osl ht mq q h had anie er.tthem anets. A shield plate 92 underlies plate 75 and the magnets forprotecting the latter and assisting in retaining them in place.

The magnets are further located within the locking plate by means of aplurality of opposing magnets 94, 96, 98 and 100 respectively. These arehoused in transverse recesses in a lower non-magnetic housing plate 102which is adjacent the lower housing member 44. Magnets 94, 96, 98 and100 are so arranged as to repel the corresponding magnets 66, 68, 70 and72 in the upper section of the lock means and tend to urge them normallyupwardly in the direction of the upper housing member Thus it will beapparent that magnets 66, 68, '70 and 72 serve as locking pins when inthe position of Figs. 1 and 3, since they are forced upwardly until theyextend through the perforations in plate 74 by the force of the magnetsopposite them in the lower section of the assembly. In this positionthey oppose advancement of locking plate 60 toward the rear of thehousing, for when such movement is attempted magnets 66 and 70 willengage plate 74.

Retraction of magnets 66 and 70 may be eifectuated, however, by use of aproperly constructed key 104, thereby permitting advancement of lockingplate 60 and unlocking of the spindle. A suitable key is illustrated inFigs. 2 and 4. It comprises an elongated member fabricated principallyof non-magnetic materials. It preferably is in the form of a card, forexample, a club membership card, made of a plurality of plies of paperand having therein a pattern of magnetic elements 106, 108. Elements106, 108 may be fabricated, for example, from pliable shim steel andhence are undetectable by ordinary inspection methods. Cord 104 and themagnetic elements sealed therein are dimensioned and arranged so thatthe latter will lie adjacent the magnets which are actively locking thelocking plate (i. e. magnets 66 and 70) when the key is fully insertedthrough slot 36 into a keyway 110 separating the lower magnet housingplate 102 and the upper shield plate 92. Thereupon the magnets arewithdrawn from perforations 76, 80 in perforated plate 74- and lockingplate 60 is released for movement to the position of Fig. 2.

The motive power for shifting the position of the locking plate may besupplied by the key itself. T this end the locking plate is providedwith an extension or abutment 112 which extends across the keyway.Hence, inward pressure exerted upon the key will be transmitted to thelocking plate which is moved inwardly, but against the tension of spring62.

Operation As has been noted above, the presently described lockapparatus is particularly designed for use in locking and unlocking thedoors of hotel rooms, apartments, homes, and club rooms. In theseapplications, the door is fitted in the manner indicated in the drawingswith locking pin 40 operating in a recess in the exterior spindle 18 andlocking pin extension 46 extending through the inside face of the door.Latch bolt 12 is operated through the retracting means indicatedgenerally at 14, independently by spindle 16 or by spindle 18 connectedrespectively to the inner and outer door knobs 20 and 22.

The lock normally is maintained in the position of Fig. 1 with lockingpin supported by pin 56 and extending into recess 28 in the exteriorspindle. When it is in this position, persons on the inside may open thedoor at will by turning knob 20.

However, when a person wishes to enter from the outside, he must firstwithdraw locking pin 40 from the exterior spindle. He accomplishes thisby inserting card 104 into keyway 110 until its inner end contactsabutment 112 on locking plate 60. 7

When the card is in this position, the magnetic shims 106, 108 concealedtherein are stationed in registry with locking magnets 66 and 70. Thelatter are attracted by the shims and withdrawn from perforations 76, inplate 74. Hence pressure of the card against the abutment will force thelocking plate to the advanced position of Figs. 2 and 4 against theresilient force of spring 62.

In this position supporting pin 56 carried by the locking plate iswithdrawn from beneath the lower end of locking pin 40 which thereforegravitates downwardly, assisted by the tension of spring 54-. in thismanner it is withdrawn from recess 28 in the spindle and the door may beopened from the outside.

After the door has closed, it may again be locked from the inside bymoving the locking pin extension 46 upwardly by means 0 knob 52 until itagain is inserted in recess 28. When this has been done spring 62 pusheslocking plate 60 to its retracted position with supporting pin 56 againunderlying and supporting locking pin The door then remains locked untilagain opened by means of the proper key.

If an improper key is used, for example, a card containing no magneticelements, it will be obvious that the magnets in the lock will remainineffective and the door will remain locked. Moreover if a knife bladeor other instrument made of magnetic material is inserted in the keyway,all of the magnetic pins will be attracted. in this case, however,magnets 68 and 72 will be drawn into openings 86 and 90 in plate 75.Because of the small dimensions of these openings, the magnets will beheld securely against lateral movement and the door will remain locked.

It is to be understood that the form of my invention herewith shown anddescribed, is to be taken as a preferred example of the same, and thatvarious changes in the shape, size and arrangement of parts may beresorted to, without departing from the spirit of my invention or thescope of the subjoined claims.

Having thus described my invention, 1 claim:

1. A lock for doors and the like comprising a latch bolt adapted to beextended from an edge surface of the door, latch bolt retracting meansconnected to the latch bolt, exterior and interior door knob spindlesconnected to the latch bolt retracting means for separate operation ofthe latch bolt, the exterior spindle having a transverse recess therein,a locking pin positioned substantially perpendicular to the exteriorspindle and mounted for retractable penetration the recess therein, asleeve stationed adjacent the exterior spindle and slidably receivingone end of the locking pin for guiding the same, a locking pin extensionextending laterally of the locking pin through the inner side face ofthe door for manual insertion of the locking pin into the spindlerecess, a guide plate on the other end of the locking pin extension andin sliding contact with the inner side face of the door, first resilientmeans connected to the locking pin for urging the same in the directionof withdrawal from the spindle recess, a lock housing adapted to bestationed within the door adjacent the door knob spindle and having atransverse opening and a longitudinal keyway extending therein, theother end of said locking pin being slidably received in and guided bythe transverse opening, a locking plate mounted substantially parallelto the keyway in the housing for longitudinal reciprocation thereinbetween advanced and retracted positions, said locking plate havingthereon an abutment extending across the keyway for contact by a keyinserted therein, a supporting pin extending outwardly from the lockingplate in the direction of the locking pin, second resilient means withinthe housing and bearing against the locking plate for maintaining itnormally in its retracted position wherein the supporting pin supportsthe locking pin and maintains it in the spindle recess, and lock meansengaging the locking plate for releasably locking it in its retractedposition pending unlocking by said key, the pressure of the key on thelocking plate abutment moving the locking plate to its advanced positionwherein the supporting pin no longer supports the locking pin which,accordingly is withdrawn by the firstresilient 'meansfjrom thespindle;recess, releasingthelatchbolt:

2.- A lock fordoors fitted with a latch-bolt-operating spindle havingtherein a transverse recess; said lock-comprising: a,loc king, pinpositioned' adjacent; the spindle for retractable penetration of therecess therein, a; locking pin extensionextendingflaterally -from the--1ocking pin-and operable manually toinsertthe-locking pin into the,recess, first' resilient" means connectedjto the locking pin for urgingthesame in the direct-ion of withdrawal from the recess, a=lockhousingadaptedto be stationed adjacentthe spindle-andhaving a-transverseopening and a keyway extending thereinto, one endoflsaid" locking pinbeing slidably receivedin the transverse. opening, a locking: plate,mounted substantially parallel to the keyway in the housing'forlongitudinal; reciprocation between ad-' vanced-and retracted positions,the locking plate haying thereon an abutment extending across the keywayfor contact by a key inserted therein,,a supporting pin extendingoutwardly from the locking plate in-the direction of the locking pin;seeondiesilientmeans-within the housing andbearing against the lockingplate for, maintaining it normally in its retracted position wherein thesupporting pin: supports the locking pin, and 'lockmeans engagingthelocking plate for releasably locking the same in its retracted positionpending unlocking by the key, thereby permitting movement of the lockingplate by the key against the force of the secondresilient means to itsadvanced position wherein the supporting pin does not support thelocking pin which accordingly is withdrawn by the first resilient meansfrom the recess in the spindle, releasing the latch bolt.

3. A lock for doors and the like fitted with a latch bolt spindle havinga transverse recess therein, said lock comprising: a locking pinpositioned below the spindle for retractable penetration of the recesstherein, a locking pin extension extending laterally from the lockingpin for manual adjustment thereof with respect to said recess, a lockhousing stationed below the locking pin and having a transverse openingand a keyway extending thereinto, the adjacent end of the locking pinbeing slidably received in the transverse opening, a locking platemounted substantially parallel to the keyway for longitudinalreciprocation between advanced and retracted positions, said lockingplate having thereon an abutment extending within the keyway forpressure contact with a key inserted therein, a supporting pin extendingupwardly from the locking plate and normally supporting the locking pin,resilient means within the housing bearing against the locking plate formaintaining the same normally in its retracted position with thesupporting pin underlying the locking pin for maintaining the sameinserted in the spindle recess, and lock means engaging the lockingplate for releasably locking the same in its retracted position pendingits unlocking by insertion of the key in the longitudinal opening.

4. A look for doors fitted with a latch bolt and a spindle havingtherein a transverse recess, said lock comprising: a locking pinpositioned adjacent the spindle and mounted for retractable penetrationof the recess therein, guide means for guiding the movement of thelocking pin, a locking pin extension extending laterally of the lockingpin for manual insertion of the same into the recess, means associatedwith the locking pin for urging the same in the direction of withdrawalfrom the recess, a locking member mounted adjacent the locking pin forreciprocation between advanced and retracted positions, the lockingmember having thereon an abutment, a supporting pin extending outwardlyfrom the locking member in the direction of the locking pin, resilientmeans bearing against the locking member for maintaining the samenormally in its retracted position wherein the supporting pin supportsthe locking pin within the recess, and lock means engaging the lockingmember for releasably locking the same in its retracted position, thelocking member being shifitable by pressure of akey on the abutmentthereon into its advanced'position wherein; the supporting pin iswithdrawn: fromcontact w-itlrthe locking p in, withdrawing thelatter-from therecess and releasing the latch bolt.

5-: A; loclefor doors proyidedwith a lat'chbolt-operate ing spindlehaving a transverse recess therein, saidflock comprising; a lockingpinpositioned adjacent the, spindle:andmounted-'-for retractablepenetration ofthe, recess therein, meansconnected with the locking pinfor manual insertion of;th'e same into therecess, means connected; tothe, locking pin for normally urging the same in the directionof,withdrawal' from said recess, a locking member mounted forreciprocation between advanced and retractedp ositions and'havingthereon contact-means positioned for contact by a key, a support member;ex,- tending outwardly from the locking memberv in the direction on thelocking pin, resilientmeans bearing against the-locking member formaintaining the same normally in its retracted, position wherein thesupport member supports the locking pin inserted" in the spindle, andlock means engaging the lock member for releasably locking the same inits retracted position pending its unlocking by means of thevkey, thekey being; thereupon further operable to move thelock member to its advanced position by; pressure contact with the contact means thereonagainst the resilient force ofthe resilient means, thereby removing thesupport member from beneath the locking pin and permitting withdrawal ofthe locking pin from the recess in the spindle.

6. A lock for doors provided with a latch-bolt-operating spindle havinga transverse recess therein, said lock comprising: a locking pinpositioned adjacent the spindle and mounted for retractable penetrationof the recess therein, means connected to the locking pin for manualinsertion of the same into the recess, a locking member mounted formovement between advanced and retracted positions and having thereoncontact means positioned for contact by a key, a support memberextending outwardly from the locking member in the direction of thelocking pin, resilient means bearing against the locking member formaintaining the same normally in its retracted position wherein thesupport member supports the locking pin inserted in the spindle, andlock means engaging the locking member for releasably locking the samein its retracted position pending its unlocking by means of the key, thekey being thereupon further operable to move the lock member to itsadvanced position by pressure contact with the contact means thereonagainst the force of the resilient means, thereby removing the supportmember from beneath the locking pin and permitting withdrawal of thelocking pin from the recess in the spindle.

7. A lock for doors provided with a latch-bolt-operating spindle havinga transverse recess therein, said lock comprising: a pin positionedadjacent the spindle and mounted for retractable penetration of therecess therein, means connected to the pin for manual insertion of thesame into the recess, a locking member mounted for movement betweenadvanced and retracted positions and having thereon contact meanspositioned for contact by a key, a support member extending outwardlyfrom the locking member in the direction of the pin and normallysupporting the pin inserted in the spindle, and lock means engaging thelocking member for releasably looking the same in its retracted positionpending its unlocking by means of the key, the key being thereuponfurther operable to move the lock member to its advanced position bypressure contact with the contact means thereon, thereby removing thesupport member from the pin and permitting withdrawal of the same fromthe recess in the spindle.

8. A lock for doors fitted with a door latch and comprising latchengaging means positioned adjacent the latch and mounted for releasablelocking engagement therewith, a locking member mounted adjacent thelatch engaging means for movement between advanced and retractedpositions and having thereon contact means positioned for contact by akey, the locking member serving as an abutment for the latch engagingmeans, and locking means engaging the locking member for releasablylocking the same in its retracted position pending its unlocking bymeans of the key, the key being thereupon further operable to move thelocking member to its advanced position by pressure contact with thecontact means thereon, thereby removing the locking member from thelatch engaging means and permitting the dis engagement of the latterfrom the latch.

9. A lock for doors fitted with a door latch and comprising latchengaging means positioned adjacent the latch and mounted for releasablelocking engagement therewith, locking means mounted adjacent the latchengaging means and comprising a pair of transversely perforated plates,one of which is movable relative to the other, the movable plate servingas an abutment for the latch engaging means and having thereon contactmeans positioned for contact by a key incorporating a magnetic element,the perforations in the plates being arranged in opposed pairs, andmovably mounted in at least one of said pairs of perforations a magnetwhich normally interlocks the plates but which is adapted upon beingapproached by the magnetic element in the key to be withdrawn from theperforations in one of the plates, thereby permitting the relativemovement of the plates and disengagement of the latch engaging meansfrom the latch upon pressure contact of the key with the contact meanson the said first plate.

10. A lock for doors fitted with a door latch and comprisinglatch-engaging means positioned adjacent the latch and mounted forreleasable locking engagement therewith, a pair of relatively movableplates having therein at least one pair of opposed recesses, one of theplates serving as an abutment for the latch-engaging means, and, movablymounted in said pair of recesses, a magnetic element normally positionedfor interlocking the plates but adapted, upon the approach of a secondmagnetic element, to be withdrawn from the recess in one of the plates,thereby permitting the relative movement of the plates and thedisengagement of the latch-engaging means from the latch.

References Cited in the file of this patent UNITED STATES PATENTS

